| Mathbox for Alexander van der Vekens |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 6gbe | Structured version Visualization version GIF version | ||
| Description: 6 is an even Goldbach number. (Contributed by AV, 20-Jul-2020.) |
| Ref | Expression |
|---|---|
| 6gbe | ⊢ 6 ∈ GoldbachEven |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 6even 48504 | . 2 ⊢ 6 ∈ Even | |
| 2 | 3prm 16758 | . . 3 ⊢ 3 ∈ ℙ | |
| 3 | 3odd 48501 | . . . 4 ⊢ 3 ∈ Odd | |
| 4 | gbpart6 48559 | . . . 4 ⊢ 6 = (3 + 3) | |
| 5 | 3, 3, 4 | 3pm3.2i 1357 | . . 3 ⊢ (3 ∈ Odd ∧ 3 ∈ Odd ∧ 6 = (3 + 3)) |
| 6 | eleq1 2850 | . . . . 5 ⊢ (𝑝 = 3 → (𝑝 ∈ Odd ↔ 3 ∈ Odd )) | |
| 7 | biidd 265 | . . . . 5 ⊢ (𝑝 = 3 → (𝑞 ∈ Odd ↔ 𝑞 ∈ Odd )) | |
| 8 | oveq1 7419 | . . . . . 6 ⊢ (𝑝 = 3 → (𝑝 + 𝑞) = (3 + 𝑞)) | |
| 9 | 8 | eqeq2d 2773 | . . . . 5 ⊢ (𝑝 = 3 → (6 = (𝑝 + 𝑞) ↔ 6 = (3 + 𝑞))) |
| 10 | 6, 7, 9 | 3anbi123d 1463 | . . . 4 ⊢ (𝑝 = 3 → ((𝑝 ∈ Odd ∧ 𝑞 ∈ Odd ∧ 6 = (𝑝 + 𝑞)) ↔ (3 ∈ Odd ∧ 𝑞 ∈ Odd ∧ 6 = (3 + 𝑞)))) |
| 11 | biidd 265 | . . . . 5 ⊢ (𝑞 = 3 → (3 ∈ Odd ↔ 3 ∈ Odd )) | |
| 12 | eleq1 2850 | . . . . 5 ⊢ (𝑞 = 3 → (𝑞 ∈ Odd ↔ 3 ∈ Odd )) | |
| 13 | oveq2 7420 | . . . . . 6 ⊢ (𝑞 = 3 → (3 + 𝑞) = (3 + 3)) | |
| 14 | 13 | eqeq2d 2773 | . . . . 5 ⊢ (𝑞 = 3 → (6 = (3 + 𝑞) ↔ 6 = (3 + 3))) |
| 15 | 11, 12, 14 | 3anbi123d 1463 | . . . 4 ⊢ (𝑞 = 3 → ((3 ∈ Odd ∧ 𝑞 ∈ Odd ∧ 6 = (3 + 𝑞)) ↔ (3 ∈ Odd ∧ 3 ∈ Odd ∧ 6 = (3 + 3)))) |
| 16 | 10, 15 | rspc2ev 3593 | . . 3 ⊢ ((3 ∈ ℙ ∧ 3 ∈ ℙ ∧ (3 ∈ Odd ∧ 3 ∈ Odd ∧ 6 = (3 + 3))) → ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ (𝑝 ∈ Odd ∧ 𝑞 ∈ Odd ∧ 6 = (𝑝 + 𝑞))) |
| 17 | 2, 2, 5, 16 | mp3an 1489 | . 2 ⊢ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ (𝑝 ∈ Odd ∧ 𝑞 ∈ Odd ∧ 6 = (𝑝 + 𝑞)) |
| 18 | isgbe 48544 | . 2 ⊢ (6 ∈ GoldbachEven ↔ (6 ∈ Even ∧ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ (𝑝 ∈ Odd ∧ 𝑞 ∈ Odd ∧ 6 = (𝑝 + 𝑞)))) | |
| 19 | 1, 17, 18 | mpbir2an 723 | 1 ⊢ 6 ∈ GoldbachEven |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ w3a 1102 = wceq 1569 ∈ wcel 2142 ∃wrex 3088 (class class class)co 7412 + caddc 11109 3c3 12302 6c6 12305 ℙcprime 16735 Even ceven 48417 Odd codd 48418 GoldbachEven cgbe 48538 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-2o 8452 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-sup 9400 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-div 11878 df-nn 12240 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-n0 12511 df-z 12598 df-uz 12869 df-rp 13023 df-fz 13542 df-seq 14045 df-exp 14105 df-cj 15157 df-re 15158 df-im 15159 df-sqrt 15293 df-abs 15294 df-dvds 16317 df-prm 16736 df-even 48419 df-odd 48420 df-gbe 48541 |
| This theorem is used by: nnsum3primesle9 48587 |
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